tgc.js

// TODO refactor into class

var systemsMap;		// reference system data
var lastFetch = '2014-09-09 12:13:14Z';		// last system fetch time (default is before earliest TGC data)
var lastDistFetch = '2014-09-09 12:13:14Z';	// last distance fetch time (default is before earliest TGC data)

// system properties:
// name - system name
// x, y, z - coordinates if known
// calculated - true if the system was not supplied by FD
// cr - TGC "confidence rating" (5+ = FD supplied, 2 = coordinates, 1 = unlocated)
// contributor - name of first person to submit the system
// contributed - datetime system was first submitted
// distances - array of distances to other systems
// tgcunlocated - true if TGC doesn't have a location for this system

function getTGCData(callback, wantDists, refDists) {
	$.getJSON('tgcsystems.json', function(data) {
		lastFetch = data.date+'Z';
		systemsMap = {};
		addSystems(data.systems);
		logAppend('Loaded tgcsystems.json: data up to '+data.date+'. Total number of systems: '+Object.keys(systemsMap).length+'\n');
	}).fail(function(xhr, txt, err) {
		logAppend('Failed to read from tgcsystems.json:\n');
		logAppend(err.message+'\n');
	}).always(function() {
		// update with any additional data from the server
		updateTGCData(
			wantDists ? 
				function() {
					$.getJSON('tgcdistances.json', function(data) {
						lastDistFetch = data.date+'Z';
						var dists = addDistances(data.distances, refDists);
						logAppend('Loaded tgcdistances.json: data up to '+data.date+'. Added '+dists+'\n');
					}).fail(function() {
						logAppend('Failed to read from tgcdistances.json\n');
					}).always(function() {
						fetchTGCDistances(callback, refDists);
					});
				}
				: callback
		);
	});
}

function getEDSMData(callback, wantDists, refDists) {
	$.getJSON('edsmsystems.json', function(data) {
//		lastFetch = data.date+'Z';
		systemsMap = {};
		addSystems(data.systems);
		logAppend('Loaded edsmsystems.json: data up to '+data.date+'. Total number of systems: '+Object.keys(systemsMap).length+'\n');
	}).fail(function(xhr, txt, err) {
		logAppend('Failed to read from tgcsystems.json:\n');
		logAppend(err.message+'\n');
	}).always(function() {
		// update with any additional data from the server
		callback();
	});
}


function refreshTGCData(callback, wantDists, refDists) {
	updateTGCData(wantDists ? function() {fetchTGCDistances(callback, refDists);} : callback);
}

function addDistances(distances, refDists) {
	var count = 0;
	$.each(distances, function() {
		var s1key = nameKey(this.name);
		if (!(s1key in systemsMap)) {
			console.log('Unknown system '+this.name+' in distance data');
			return;
		}
		$.each(this.refs, function(dist) {
			var s2key = nameKey(this.name);
			if (!(s2key in systemsMap)) {
				console.log('Unknown system '+this.name+' in distance data');
				return;
			}
			count++;
			if (systemsMap[s1key].calculated || refDists) {
				if (!('distances' in systemsMap[s1key])) systemsMap[s1key].distances = [];
				var found = false;
				$.each(systemsMap[s1key].distances, function() {
					if (this.name === systemsMap[s2key].name && this.dist === dist.dist) {
						found = true;
						return false;
					}
				});
				if (!found) {
					systemsMap[s1key].distances.push({system: systemsMap[s2key].name, distance: this.dist, creator: this.commandercreate, created: this.createdate});
				}
			}
			if (systemsMap[s2key].calculated || refDists) {
				if (!('distances' in systemsMap[s2key])) systemsMap[s2key].distances = [];
				var found = false;
				$.each(systemsMap[s2key].distances, function() {
					if (this.name === systemsMap[s1key].name && this.dist === dist.dist) {
						found = true;
						return false;
					}
				});
				if (!found) {
					systemsMap[s2key].distances.push({system: systemsMap[s1key].name, distance: this.dist, creator: this.commandercreate, created: this.createdate});
				}
			}
		});
	});
	return count;
}

// TODO do something with count/rejected
function addSystems(systems) {
	var count = 0; rejected = 0;
	$.each(systems, function() {
		var key = nameKey(this.name);
		if (!(key in systemsMap) || systemsMap[key].contributor !== 'FD') {
			// we don't replace FD systems with new data
			
			if (!(key in systemsMap)) systemsMap[key] = {};
			systemsMap[key].x = this.coord[0];
			systemsMap[key].y = this.coord[1];
			systemsMap[key].z = this.coord[2];
			systemsMap[key].name = this.name;
			systemsMap[key].calculated = this.commandercreate !== 'FD' || this.cr < 5;
			systemsMap[key].cr = this.cr;
			systemsMap[key].contributor = this.commandercreate ? this.commandercreate : '(unknown)';
			systemsMap[key].contributed = this.createdate;
			if ('tgcunlocated' in this) {
				systemsMap[key].tgcunlocated = this.tgcunlocated;
			} else {
				delete systemsMap[key].tgcunlocated;
			}
			count++;
		} else {
			rejected++;
		}
	});
//	if (rejected > 0) msg += 'Rejected '+rejected+' systems. ';
}

function updateTGCData(callback) {
	$.ajax({
		type: 'POST',
		contentType: 'application/json; charset=utf-8',
		url: 'http://edstarcoordinator.com/api.asmx/GetSystems',
		data: JSON.stringify({data: {
			ver: 2,
			outputmode: 2,
			filter: {
				cr: 1,
				date: lastFetch
			}
		}}),
		dataType: 'json',
		success: function(data, status, xhr) {
			data = data.d;
			//lastFetch = data.date+'Z';
			//console.log(JSON.stringify(data, null, 2));
			if (data.status.input[0].status.statusnum !== 0) {
				logAppend('Error from TGC server: '+data.status.input[0].status.statusnum +' '+data.status.input[0].status.msg+'\n');
			} else {
				addSystems(data.systems);
				logAppend('Fetched '+data.systems.length+' systems from TGC. Total number of systems: '+Object.keys(systemsMap).length+'\n');
			}
			callback();
		},
		error: function(xhr, status, error) {
			//console.log(xhr.responseText);
			logAppend(error+'\n');
			console.log('Error from TGC server: '+error);
			console.log('Request was:');
			console.log(JSON.stringify(query, null, 2));
			callback();
		}
	});
}

function fetchTGCDistances(callback, refDists) {
	$.ajax({
		type: 'POST',
		contentType: 'application/json; charset=utf-8',
		url: 'http://edstarcoordinator.com/api.asmx/GetDistances',
		data: JSON.stringify({data: {
			ver: 2,
			outputmode: 2,
			filter: {
				cr: 0,
				date: lastFetch
			}
		}}),
		dataType: 'json',
		success: function(data, status, xhr) {
			data = data.d;
			//lastDistFetch = data.date+'Z';
			//console.log(JSON.stringify(data, null, 2));
			if (data.status.input[0].status.statusnum !== 0) {
				logAppend('Error from TGC server: '+data.status.input[0].status.statusnum +' '+data.status.input[0].status.msg+'\n');
			} else {
				var dists = addDistances(data.distances, refDists);
				logAppend('Fetched '+dists+' distances from TGC\n');
			}
			callback();
		},
		error: function(xhr, status, error) {
			//console.log(xhr.responseText);
			logAppend(error+'\n');
			console.log('Error from TGC server: '+error);
			console.log('Request was:');
			console.log(JSON.stringify(query, null, 2));
			callback();
		}
	});
}


function logAppend(str) {
	console.log(str);
}

// move to trilateration.js??
function nameKey(n) {
	if (!n) return n;
	return $.trim(n.toLowerCase());
}